I have a sweet golden buff sexlink hen who likes to have her throat stroked, and the other day, as I was petting her, I discovered that she has a hard pea sized lump in her throat (not her crop). I do not know what this is. I cannot find any information about it, and none of my other chickens seem to have a lump like this. I don't know if I should deworm them again, (they were wormed recently), or if I should worry at all. She has always been healthy, and has no other symptoms. She is free range and I live in the tropics. Her comb has never been as bright red as her sister's combs, but I'm not sure if that's relevant since it has always been like that. I really like my chickens, I keep their coop clean, and I try hard to be a good chicken mom. I've had several that have gotten bumblefoot in the rainy season. Does anyone know what this hard lump could be? It seems to stay the same in size and hardness.